1999 ram 2500 5.9 gas surging under acceleration
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1999 ram 2500 5.9 gas surging under acceleration
Hey so after reading many threads on this site I decided to join and start my own. I have a 1999 ram 2500 with a body and computer from a 2000. I have pulled the cat and running dual exhaust but had some O2 sensor issues so I welded bungs in one of the exhaust runs and re-installed new O2 sensors. Now I’m still getting O2 sensor circuit high voltage, bank 1 sensor 1 CEL. I’m also getting a little black smoke out of the exhaust, I know some should be expected with no cat but how much? The worst problem is surging rpms at mid throttle, some days are much worse than others. Low rpms are steady and same at WOT. It almost seems like it’s going to stall out completely sometimes. Here’s a list of what I’ve done/replaced, any help is greatly appreciated!
-New O2 sensors front and rear
-new throttle position sensor
-new crankshaft position sensor
-new brake pedal switch
-checked psv on valve cover drivers side, seems in rough shape, going to get a new one
-New O2 sensors front and rear
-new throttle position sensor
-new crankshaft position sensor
-new brake pedal switch
-checked psv on valve cover drivers side, seems in rough shape, going to get a new one
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Did you pinch a wire somewhere? Should be able to test right at the connector. Should be 12 volts on one wire, 5 volts on another, other two shouldn't show any voltage. (one is just a ground, the other is signal return to the PCM.)
I suspect though, that the 12 volts will only be there for a few seconds at key-on, unless the engine is actually running.
I suspect though, that the 12 volts will only be there for a few seconds at key-on, unless the engine is actually running.
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UPDATE-today it was running really rough and the check engine light started blinking so I pulled over read the codes,
-multiple random cylinder misfire, 1,3&7 I believe
-evap system leak detected
-O2 sensor circuit high voltage bank 1 sensor 1&2
Seems like it got worse today. Gah this thing is frustrating!
-multiple random cylinder misfire, 1,3&7 I believe
-evap system leak detected
-O2 sensor circuit high voltage bank 1 sensor 1&2
Seems like it got worse today. Gah this thing is frustrating!